Exposure unit for lithographic plates



FIG. 1 is a front elevational view of an exposure unit for lithographic plates showing my new design, the rear being a mirror image but without the control panel;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image but without the electrical cord;

FIG. 4 is a bottom plan view thereof. 

The ornamental design for an exposure unit for lithographic plates, substantially as shown and described. 